Tire.



Pf S. BYINGTON.l

TIRE.

APPLICATION FILED JAILZ, 1913.

Patented J all. 27, 1914.

UNITED STATES PATENT OFFICE.

FRANK S. BYINGTON, OF LOS ANGELES, CALIFORNIA.

TIRE.

Application filed January 2, 1918.

To atl whom timely concern:

' Be it known that I, FRANK S. BYINGTON, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Tire, of which the following is a specification.

This invention relates to a novel pneusy matic tire wherein a division of the forces acting on the ordinary outer tire casinfr is effected, so that said outer casing, as use in this invention, only sustains the wear and tear of the road, the tension of the inflated pneumatic tube within said tire being sus! tained by a separate inner casing whlch is suitably locked or bound onto the wheel rim near its inner periphery.

The chief object of this invention is to materially prolong the life ofa pneumatic tire, and to this end novel meansare provided for relieving the outer tire casing from the tension or strain of the inflated pneumatic tube.

Other objects may appear in consideration of the appended detailed description and also by inspection of the drawings accompanying this application.

The accompanying drawings illustrate the invention.

Figure l is a fragmental axial section of a wheel which is provided with oneform of tire embrac'i g this invention. Fig. 2 is a similar section showing another form of tire embodying this invention, and this section is taken on line a02-x2, Fig. 3. Fig. 3 is a side view of a wheel rim with a tire attached. Fig. 4 is another fragmental axial section through the same tire shown in Fig.' 2 and taken on line ietwat, Fig. 3. Fig. 5 shows in section -a modification in certain parts of the general tire construction of Fig. 2. Fig. 6 illustrates in section a detached fragmental portion of the outer tire casing shown in` Fig. l.

In the figures the wheel rim is shown comprising the body 1 and lian e 2, and into the overhanging portions 3 o said ange arc sprung the usual annular shoulders 4 of an outer tire casing 5. At any suitable places around the inner face of said outer tire casing and on either side of same, are formed two sockets 6 which usually extend around the whole Wheel. Within said outer tire casing 5'is placed another separate. casing 7 having shoulders 8 adapted to be sprung into sockets 6 of the outer tire casing. Within Speciication of Letters Patent.

Patented Jan. 2 7, 1914. serial No. 739,907.

the inner casing 7 is placed a pneumatictire is adapted to be inflated in any well-known manner, a soft smooth flap l0 being placed along the inner periphery of said'tube `for the purpose of protecting its inner peripherytube 9 of ordinary construction, and the same In the tire shown in Fig. 1 the base of the l outer casinor is formed with two vertical 4faces 1l and 12 adapted to abut on one another, and the sockets 6 and shoulders 8 lie on either side of said faces; while in Fig. 2 .sockets 6 and shoulders 8 are formed at the lnner periphery of the outer and inner casings 5 and 7 and adjacent the wheel rim; and in -the further modification shown in Fig. 5 the said sockets and shoulders are.

formed Vbeyond the innerperiphery of said lcasings and at points removed from the wheel rim. In each of these forms the friction between the outer and inner casings is.,

usually sufiicient to avoid circumferentiall slipping of one casing with respect to the! other', but for the purpose of positively avoiding such creeping, notches 13 and lugs 14, Fig; 4, adapted to register with each other, are provided in the outer and inner` casings respectively.

When the pneumatic tube is infiated the inner casing 7 is extended against the outer tire casing and forces the shoulders 4 of the latter beneath the overhanging portions '3 of the rim flange 2, whereby said outer casing becomes securely locked to said wheel rim. The socket and shoulder connection between the outer and inner casings serves to lock said casings together near their inner periphery.

In the preferred modification shown in Fig. 2 the inner casing is locked so that its inner periphery abuts the wheel rim, and it will be understood, of course, that the shoulder and `socket connection merely illustrates one practical and efficient form of locking means.

In the operation of such a tire the ezty pa-nsive pressure of the pneumatic tube is. directly sustained by the inner casing 7, this inner casing\being adapted to sustain said pressure because its inner periphery is lockedin position. `\Though practically all of this pneumatic pressure is sustained by said inner casing there is no wear on-sameA due to contact with the, road, while on the other hand4 the outer casing sustains vall road wear and is completely relieved of the pneumatic pressure within, except for a Sometimes also when the outer vcomes damaged in such manner 4outer easing` may `slight portion of said pressure 'which is iinpaifted to same in order to keep it Well eX- tended and locked to the rim. It. Will. be understood, of course, that this division of fort-es and function is made possible. only by building' the outer and inner casings `as separate abutting and disconnected inembers; and it is found in practice that the life ot' each casing, as employed in this in veiitioii. materially` prolonged by being subject only to one distinct type of service. lt will be also clear that the thickness of the outer casing` is considerably increased by providing an inner casing, and to this extent therefore the vulnerability of the pneumatic tire feature is decreased so that theV risk of puncture is. considerably lessened.

casing betliat it is not sate 0i` expedient toaun on saine, it may be completely removed and by further eX- paiision of the pneumatic tube the annular shoulders S of the inner casing T, Fig. 2, may be expanded and locked beneath the oyerhanging iiange portions 3, so that the wheel may be temporarily run on the inner casingv to a point where a new or repaired be secured and replaced over said inner casing'.

lt is believed, in View of the foregoing description, that -the' construction and operation o the tire embodying this invention will be clear.

In combination a Wheel iiin having flanges, one on each sidel ofsaid rim and said Hangers extending outwardly from said rim and beingVY turned over toward each other so as io form overhanging tlangjes; an integral outer ti-re casing adapted to withstand road strains and having annular externally-projecting` shouldersl one on each side 0f said casing', said shoulders to tit into said overhanging flanges of the rim. said outer-.tire casing` also hai-'ing in tcrnal oyerhanging sockets running circumvexternally-projecting shoulders on each side and near the inner periphery of said inner 'tire casina@ each of the last said shoulders being adapted to tit Within said internal' oreihanging sockets of the outer tire casing` for independently and positively locking' said inner tire casing to said outer tire casing. so that the twocasing's normally hang;` together and resemble a single casing; and a' pneumatic tube Within said'inner tire casing; said external shoulders of the inner tire casini` and internal sockets of the outer tire. casing being formed adjacent to said external shoulders on the outer tire casing and being` adapted to lie in the space' between said overhanging' flanges of the Wheel iiiii. so thatv when the pneuinatie tube is inllated pneumatic pressure is imparted directly from said external shoulders on the inner tire casing to the internal sockets and =external shoulders on the outer tire easing` and to said oyerhangiircj ilanges ot the rim so as to `forcibly .lock the tire casings other and to the Wheel rim.

'In testimony whereof, l have hereunto setv my handit Los Angeles. California, this Ath day of December7 1912.

FRANK S. BYNGTON. In presence of#- lanas l. l Town siasi),

tornar Q. STL-irs.

being` formed so as' to each 

